Combustion-engine-spark-plug protector



' 1,619,524 March 1 1927' A. MANCHESTER COMBUSTION ENGINE SPARK PLUG PROTECTOR File 51 eo.50 1925 /0 a $45 2 H J 5 Altar/my Inventor acfiesfel" PATENT OFFICE.

ADAM MANCHESTER, OF CENTRAL BRIDGE, NEW YORK.

COKBUSTION-ENGINE-SPARK-PLUG FROTECTOR.

Application filed December 30, 1925. Serial No. 78,372..

This invention relates -to protectors for spark plugs and has more particular reference to a means for engagement over the projecting ends of spark plugs for preventmg the accumulation of dirt, moisture and the like within the usual pockets that are formed in' certain types of motors that surround the plugs;

, It will thus be seen that the primary object of the invention is to provide a means for preventing the accumulation of dirt or better understood, the same comprises the novel form, combination and arrangement of parts hereinafter more fully described and shown in the accompanying drawing and claimed.

In the drawing wherein like reference characters indicate corresponding parts throughout the several views Figure 1 is a to plan view of the protector plate as actua y applied to a' motor of conventional design, V

Fig. 2 is a fragmentary section through said motor and plate for more clearly dise closing the relationship of a spark plug with 'resrpect to the plate, ig. 3-is'a bottom per se, and I .Fig. 4 is a fragmentary vertical section plane VieWl of the plate,

through a portion of oneof thecylinder' head securing boltsland plate for clearly dis-i closing the means whereby the plate is'rigidly secured to the c linder hea V In the drawing, t ere isdisclosed fragmentaril a conventional cylinder head that is rovi ed with one or more pairs of closely ated ark plug openings surrounding each of w ch is-the we known reducing the thickness of the cket 5 for f and at the points provided with a spark plug receiving "o g 6. Thusly, the protector plate disc osed m the present invention is of such construction as to permit of thlegair of closelyrelated pockets to be eove simultaneously and also for permitting 'of the attachment of the usual ignition circuit wires to the plugs within-the by said pockets.

With particular reference to the drawing, my invention constitutes the provision of a metallic plate 7 that is so formed as to provide a pair of interconnected relatively circular-shaped portions 88, the rear sides thereof merging into a straight edge 9 in order that the plate may be maintained at this edge infiush engagement with the relatively vertical ortionia of the motor head The curve edges ofthe portions 8- 8 comprising saidplate 7, areturned downwardly as at 10 in order that the plate may be supported in a horizontal manner upon the cylinder headias more clearly shown in openings surrounded Fig. 2: Said downwardly turned portion as well as the rear plane edge 9 of the plate is channeled for receiving a vpacking strip 11 for preventing the passage of moisture between the plate and the cylinder head and consequently reaching the pockets 5 over which are dis sed the circular portions 8v--' of said p ate.

Each circular portion 8 of the plate 7 is formed centrally with a circular opening 12 within which is arranged a cap 13 of insulating material, the top wall of which is turn formed with an opening 14 for permitting of the upper end of the spark plug B projecting therethrou'gh in order that the usual ignition wire may be secured thereto.

The cap and its means of attachment is preferably of the construction as shbwn in the sectional view, Fig. 2. However, I do not wish to be limited sucha construction as departures may be had therefrom without eflfectmg the spirit and scope of the appended claims. a In motors of head A is secured, to the block through the medium of stud bolts, one of which is usually positioned intermediatethe adjacent, ockets 5 at the rear side thereof, this stud olt'being designated in the drawing 0.

In this instance the head of the bolt upon the top side of the motor vehicle A is formed with a threaded socket 15 within which is threaded the enlarged threaded end 16 of a smallthreaded bolt 17 that is ada ted to extend through an o g 18 int e plate 7 when the same is osed upon the motor headinamanneras owninFigs. land 2. After the plate has been so positioned, a

the character) disclosed, the I wing nut 19 is to be threaded upon said bolt 17 for maintaining the plate in firm engage-. ment upon the head of the motor.

It will thus be seen that I have provlded a highly n'ovel, simple and efiicient form of protecting plate for the spark plugs of com-' bustion engines that will effectively prevent the accumulation of dirt or moisture 1nto the pockets that surround the plugs 1n conventional types of motors.

I do not desire to be limited to the specific structural elements such and described lI'lSO- much as in the future practice of the invention, modifications may be made without affecting the spirit and scope of the appended claims. p

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. In a protector for internal combustion engine spark plugs wherein the engine 1S formed with pairs otclosely related spark plug openings surrounding which are plug wrench receiving pockets, of a plate member formed of a plurality of circular portions adapted to be disposed over sald pockets, each of said circular portions being provided with an opening for permitting the upper end of the spark plug to be projected therethrough, a cap formed of insulated material arranged in each of said openings, the top of each cap having an opening provided therein through which the upper end of the spark plug extends, and means for securing the plate on the engine.

2. In a protector for internal combustion engine spark plugs wherein the motor head is formed with pairs of closely related spark plug openings, and surrounding whichare plug wrench receiving pockets, a plate member including a 'pluralit of circular portions adapted to be disposed over the respective pockets, saiil circular portions having openings for permitting the upper portion of a spark plug to project therethrough, the peripheral edge of the plate having a channel formed therein, a packing strip arranged in the channel and adapted to engage the motor head toprovide a dustproof joint, and means for securing the plate on the inotor head.

3. In a protector for internal combustion engine spark plugs wherein the motor head is formed with pairs of closely related spark plug openings, and surrounding WhICh are plug wrench receiving pockets,vwhere1n a substantially vertical wall rises from the rear portions of the pockets, a plate member formed of a plurality of circular portions adapted to be disposed over the respective pockets, said circular portions having openings for permitting the upper portionengine spark plugs wherein a motor head is formed with pairs of closely related spark plug openings, and surrounding which are plug wrench receiving pockets, wherein a substantially vertical wall rises from the rear portions of the pockets, a plate member formed of a plurality of circular portions adapted to be disposed over the respective pockets, said circular portions having openings for permitting the upper portions of a spark plug to project therethrough, a horizontal straight edge at the rear side of the plate for contact with said vertically extendlng rear wall of the motor head, the front and. sides of the plate being disposed down- Wardly for engagement with the horizontal top portion of the head, the peripheral edge of the plate having a channel therein,

provide a dustproof joint between the plate and the motor head, a cap of insulated ma:

terial secured'in each of said openings, the

a packing strip arranged in said channel to v ADAM MANCHESTER, I 

